From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The slip load for the propeller shaft damper on the 20/25 and Bentley chassis.
| Identifier | ExFiles\Box 105\2\ scan0144 | |
| Date | 16th January 1935 | |
| X 5340 To By.{R.W. Bailey - Chief Engineer} c. to Mx.{John H Maddocks - Chief Proving Officer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}11/KW.16.1.35. Propellor Shaft Damper - 20/25 & Bentley. The load at which the flywheels of this damper should slip for either chassis is between 4½ and 5 lbs. at 17¼" radius. The surfaces of course should be absolutely dry. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||